Q: Is 243,536 a Prime Number?
A: No, 243,536 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 243536 can be evenly divided by 1 2 4 8 16 31 62 124 248 491 496 982 1,964 3,928 7,856 15,221 30,442 60,884 121,768 and 243,536, with no remainder.
Since 243,536 cannot be divided by just 1 and 243,536, it is not a prime number.